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图学学报

图学学报 ›› 2022, Vol. 43 ›› Issue (5): 901-908.DOI: 10.11996/JG.j.2095-302X.2022050901

• 计算机图形学与虚拟现实 • 上一篇    下一篇

一种基于全景视频的 6 自由度野外虚拟环境快速构建方法

  

  1. 北京大学地球与空间科学学院，北京 100871
  • 出版日期:2022-10-31 发布日期:2022-10-28

A fast construction method of 6-DOF field virtual environment based on panoramic video image 

  1. School of Earth and Space Sciences, Peking University, Beijing 100871, China
  • Online:2022-10-31 Published:2022-10-28

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摘要：

野外环境的虚拟化是一个具有重要意义的研究领域，关于如何更高效、更便捷地构建野外虚拟 环境，以及如何在构建的虚拟环境中获得更高的交互自由度与更好的沉浸式体验，是值得思考的重要问题。因 此，提出了一种基于全景视频的 6 自由度野外虚拟环境快速构建方法，通过对从中提取的全景影像进行深度估 计、摄影建模等处理，得到划分为不同远近层次的重建场景；并根据用户的漫游位置实现了近远景的实时动态 匹配融合，最终获得了支持一定范围内 6 自由度漫游的沉浸式野外虚拟环境；通过图像质量的客观指标进行了 量化分析验证，并实现了从构建到使用完整流程的野外虚拟环境原型系统作为应用。结果表明，该方法有着高 效地使用方式与优良的应用效果，在虚拟化野外地质实习教学等方面有着良好的前景。

关键词: 虚拟地理环境, 全景影像, 全景视频, 野外环境, 摄影建模, 视野融合, 6 自由度漫游

Abstract:

The virtualization of the field environment is of great research significance. It is necessary to consider the following questions: how to construct field virtual environments more efficiently and conveniently, and how to achieve higher degree of interaction freedom and better immersive experience in the constructed virtual environment. We proposed a fast construction method of field virtual environment based on panoramic videos. Through the processing of depth estimation and photographic modeling of extracted panoramic images, the reconstructed scenes were divided into far and near scenes with various forms. Finally an immersive field virtual environment was produced, which supported 6-DOF roaming within a certain range. The practicability of this method was quantitatively analyzed and verified by the objective indicators of image quality, and a prototype system with the complete process from the construction to the use of the field virtual environment was developed as an application. The results show that the fast construction method of 6-DOF field virtual environment based on panoramic image could achieve high efficiency and excellent applicability, exhibiting promising prospects in fields such as virtual field geological practice and teaching. 

Key words: virtual geographic environment, panoramic image, panoramic video, field environment, 3D reconstruction, visual field fusion, 6-DOF roaming ,

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